CN105140015B - Magnetic ferrite magnetic core moves back the measurement of epilation thorn, minimizing technology and device - Google Patents
Magnetic ferrite magnetic core moves back the measurement of epilation thorn, minimizing technology and device Download PDFInfo
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- CN105140015B CN105140015B CN201510486099.5A CN201510486099A CN105140015B CN 105140015 B CN105140015 B CN 105140015B CN 201510486099 A CN201510486099 A CN 201510486099A CN 105140015 B CN105140015 B CN 105140015B
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Abstract
The present invention relates to a kind of magnetic ferrite magnetic core to move back the measurement of epilation thorn, minimizing technology and device.Apparatus of the present invention include frame, fixture, three-dimensional movement platform, zoom microscopic digital picture system and ultrasonic vibration system.Three-dimensional movement platform is provided with frame, fixture is placed in three-dimensional movement platform, and coil is fixedly installed below described fixture；Described coil is used to fix soft magnetic ferrite after powered up.Zoom microscopic digital picture system and ultrasonic vibration system are provided with above described fixture；Burr measurement and core center position location Calculation are carried out to magnetic ferrite magnetic core by zoom microscopic digital picture system, according to the height of measurement burr, ultrasonic vibration system parameter is set, starts ultrasonic vibration system, remove magnetic core moves back epilation thorn.The inventive method solves the problems, such as that magnetic core burr is small, distribution is irregular, difficult measurement, accurate control of burr height, ensures the performance of magnetic core, improves the class and commercial value of magnetic ferrite magnetic core.
Description
Technical field
The present invention relates to a kind of magnetic ferrite magnetic core to move back epilation thorn minimizing technology and device.
Background technology
Soft magnetic ferrite has the characteristics that high magnetic permeability, high resistivity, low-loss and wearability, and easily batch is raw
Production, stable performance and machining property are high, it has also become the basic material of electronics industry, mechanotronics and factory's industry.We
Variously-shaped magnetic core can be made using mould, its application directly affects electronic information, household electrical appliances industry, computer with leading to
News, environmental protection and the development of power-saving technology.It is most of to belong to although the preparation total amount of China's soft magnetic ferrite ranks first in the world
Low-level preparation.Due to the limitation of press mold technique, inevitable produce moves back epilation thorn in magnetic ferrite magnetic core process,
Affect its performance.In addition, magnetic core surface quality drastically influence the very big of commercial value, especially burr height
Influence, carrot-free like product price wants high 2~3 times.
Epilation thorn is moved back to remove, makes magnetic core that there is good dimensional accuracy, performance meets physical characteristic, on the one hand, soft
Surface Machining generally is carried out by using grinding technics in magnetic ferrites magnetic core processing process, but due to magnetic core geometry
Influence, abrasive material can be caused can not to grind burr, while can also damage magnetic core matrix；On the other hand, spray one layer uniformly, it is fine and close,
Insulation, organic coating attractive in appearance, weaken the wire abrasion to magnetic core surface, prevent premature failure conductive line surfaces insulating barrier, spray
Though method improves commercial value, cost is also improved, and the magnetic ferrite magnetic core of some specifications does not allow to magnetic core table
Face carries out coating covering；In addition when magnetic core burr is excessive organic coating thickness can be caused to be difficult to control, part quality is difficult to stabilization.
Soft magnetic ferrite belongs to hard ceramic, and ultrasonic vibrating machining be the finishing of brittle failure material important means it
One, its principle is exactly using ultrasonic wave to produce huge pressure transformation in media as well, and burr generation forced vibration is allowed with this, when being forced to
Stress caused by vibration has exceeded the maximum stress that burr can bear, and burr will be broken.Due to soft magnetic ferrite
The burr size of magnetic core is small and fractions distribution is irregular, to going flash removed to bring difficulty, and easily damage magnetic core matrix, and mesh
Preceding related ultrasonic wave processing technology is still immature, no Reliable Products.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of magnetic ferrite magnetic core moves back epilation thorn minimizing technology and dress
Put.
To solve problem above, present invention employs following technological means：
Magnetic ferrite magnetic core moves back epilation thorn removal device, including the micro- number of frame, fixture, three-dimensional movement platform, zoom
Word picture system and ultrasonic vibration system.
Three-dimensional movement platform is provided with frame, fixture is placed in three-dimensional movement platform, solid below described fixture
Surely it is provided with coil；Described coil is used to fix soft magnetic ferrite after powered up.
Zoom microscopic digital picture system and ultrasonic vibration system are provided with above described fixture；It is micro- by zoom
Digital image system carries out burr measurement and core center position location Calculation to magnetic ferrite magnetic core, according to measurement burr
Highly, ultrasonic vibration system parameter is set, starts ultrasonic vibration system, remove magnetic core moves back epilation thorn.
Magnetic ferrite magnetic core moves back epilation thorn minimizing technology：The burr of magnetic ferrite magnetic core passes through zoom microscopic digital figure
On solid state image sensor, imaging sensor is connected picture system imaging by USB interface with computer, is located in advance by image
Reason, after rim detection, image-region division, extraction height, girth, area and position distribution situation.Wherein, image is located in advance
Reason uses the micro-image Denoising Algorithm based on wavelet transformation, makes the marginal information of image apparent, textural characteristics enhancing；Edge
Detection uses the morphological Edge Detection algorithm based on scan line；Split according to the image-region after rim detection, it is then right
Image after segmentation is marked, finally after extraction mark burr profile, choose burr profile, girth, the centre of form, area and most
Big height is used as its geometric properties；By the position of form center of each magnetic core on image from the Coordinate Conversion on image be three-dimensional motion
The numerical value of reference point on platform, tool heads relative motion position is obtained, drives three-dimensional movement platform, start ultrasonic vibration system,
Pierced so as to complete to remove the epilation of moving back of magnetic core.
The beneficial effects of the present invention are：The inventive method solves that magnetic core burr is small, distribution is irregular, difficult measurement
Problem, accurate control of burr height, ensure the performance of magnetic core, improve the class and commercial value of magnetic ferrite magnetic core,
Advantageously improve magnetic ferrite magnetic core debarring process and reduce soft magnetic ferrite processing cost.
Brief description of the drawings
Fig. 1 is apparatus of the present invention structural representation.
Fig. 2 is that device group function is schemed with composition.
Fig. 3 is that zoom shows Digital Image Measure System frame diagram.
Fig. 4 forms for control system.
Fig. 5 is ultrasonic vibration system structural representation.
Fig. 6 is the threedimensional model of transducer.
Fig. 7 is the threedimensional model of ultrasonic transformer.
Fig. 8 is software function diagram.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
The present invention is used to the epilation thorn that moves back of magnetic ferrite magnetic core is measured and removed, and device mainly includes：Machinery
Five system, zoom microscopic digital picture system 2, kinetic control system, ultrasonic vibration system 3 and software systems parts.Such as Fig. 1
It is shown, its schematic three dimensional views.Fig. 2 show the function and composition figure of device.
The workflow of device：
Magnetic core batch is put in Three Degree Of Freedom experimental bench (slide unit 4 of the X-direction free degree, slide unit 5, the Z of the Y-direction free degree
The slide unit 1 of the direction free degree) flat board, it is magnetically fixed by adding, by zoom microscopic digital picture system to each soft magnetic ferrite
Magnetic core carries out burr measurement and core center position location Calculation, according to the height of measurement burr, sets Vibration Parameters, opens
Dynamic vibrational system, moves to core center position, remove magnetic core moves back epilation by the automatic control system of Three Degree Of Freedom by processing head
Thorn.
1st, magnetic ferrite magnetic core burr form distribution measuring and analysis
Including mechanical part, zoom microscopic digital picture system and kinetic control system.
General principle：The burr of tested magnetic ferrite magnetic core is imaged on solid state image sensor by zoom microscope
On, imaging sensor is connected by USB interface with computer, and the USB of IMAQ and processing modules implement video image is gathered,
By image preprocessing, after rim detection, image-region division, its height, girth, area and position distribution situation are extracted
Etc. parameter.Wherein, image preprocessing uses the micro-image Denoising Algorithm based on wavelet transformation, makes the marginal information of image more clear
Clear, textural characteristics strengthen, and noise removal capability is also fine；Rim detection uses the morphological Edge Detection algorithm based on scan line；According to
Image-region after rim detection is split, and then the image after segmentation is marked, finally burr after extraction mark
Profile, burr profile, girth, the centre of form, area and maximum height are chosen as its geometric properties.By each magnetic core on image
Numerical value of the position of form center from the Coordinate Conversion on image for the reference point (mechanical zero position of kinematic system) on operating platform,
It can be obtained by operating head movement position.
Mechanical system：Including fixture and three-dimensional platform.When device is operated, it is necessary to ultrasonic tool head is pressed in soft
On magnetic ferrites, because soft magnetic ferrite belongs to soft magnetic material, so coil is disposed below in iron platform, coil is carried out
It is powered.Using magnetic field caused by coil electricity, flat board and soft magnetic ferrite are magnetized, so as to which soft magnetic ferrite is fixed on into flat board
On.Three-dimensional platform includes the slide unit of X, Y, Z three degree of freedom, and disposes motor in each free degree.
Zoom microscopic digital picture system：To adapt to the measurement of different small burrs, varifocus objective camera lens should have big work
Make apart from the characteristics of, lens construction is compact, miniaturization, and zoom microcobjective here selects electronic eyepiece.Fig. 3 show zoom
Aobvious Digital Image Measure System framework.
Kinetic control system：Mainly it is made up of motion controller, stepper motor driver, stepper motor and leading screw, such as Fig. 4
It is shown.Three leading screw effective travels of X, Y, Z axis are respectively 1200mm, 800mm, 500mm, precision C7, helical pitch 5mm.System
Host computer is using magnificent industrial computer is ground, and controller uses PLC, stepper motor is driven, so as to drive ball screw to move.On
Position machine sends movement instruction to PLC by RS232 serial communications port and receives feedback signal, realizes the motion control to testing stand
System and status monitoring.PLC by stepper motor driver control stepper realize to horizontal direction workbench X, Y-axis leading screw and
Perpendicular to the motion of the Z axis leading screw on ground, the purpose for controlling processing head and magnetic core relative position is finally reached.The controller of selection
For OMRON CP1E-N30DT-A, the stepper motor driver used is used then using thunder match M860 stepper motor drivers
Stepper motor is 57BYGH76304B.
2nd, magnetic ferrite magnetic core burr removes
Mainly completed by ultrasonic vibration system, deburring process is automatically performed by kinetic control system.Ultrasonic vibration system
System, referring to Fig. 5, including ultrasonic power, ultrasonic transducer (a), ultrasonic variable amplitude bar (b) and tool heads (c).Ultrasonic wave electricity
Source is loaded on transducer after power frequency electric is converted into ultrasonic exciting, and electric excitation is converted into ultrasonic activation by transducer, warp
The ultrasonic activation crossed after ultrasonic transformer amplification is propagated in tool heads to be processed to workpiece.
Ultrasonic power is chosen：Using FZ-1000A type ultrasonic powers, it has good frequency-tracking function, can
Corresponding fine setting is made according to the change of ultrasonic vibration system resonant frequency, and can more easily by ultrasonic power with
Whole control system links together, and improves the automaticity of system.According to magnetic ferrites magnetic core burr form distribution measuring
And the height of analysis gained burr, its performance number can be set.
Ultrasonic transducer designs：Using Langevin structure (including back shroud 6, bolt 7, dead ring 8, electrode slice 9, pressure
Electroceramics 10, front shroud 11, piezoelectric ceramics crystalline substance heap 12), both solved the problems, such as, because PZT-4 pull resistances are bad, to reduce again
The resonant frequency of transducer, transducer is set to be more suitable for being used to produce power ultrasonic.Such as the threedimensional model that Fig. 6 is transducer.It is logical
It is as shown in table 1 to cross and the size of transducer each several part is calculated.
The size of the transducer of table 1
Meanwhile displacement node (displacement node is the optimum position of mounting ultrasonic vibrational system) is calculated in x=0 (x
Represent position of the particle in transducer front and rear panel lid and piezoelectric ceramics crystalline substance heap) position, the vibration velocity ratio of ultrasonic transducer
For 1.74.
Ultrasonic variable amplitude bar designs：From complex Gaussian ultrasonic transformer, ultrasonic transformer made of No. 45 steel Jing Guo modifier treatment
Threedimensional model it is as shown in Figure 7.
Ultrasonic wave is propagated in ultrasonic transformer and can be expressed from the next：
According to this equation and consider that the multiplication factor that ultrasonic transformer can be calculated after boundary condition is 1.84, form factor
For 1.84.High amplitude end length l3For 23.73mm, the length l of Gaussian segment2For 64.10mm, the cylinder length l at amplitude end1For
65.01mm.The ultrasonic transformer displacement node is in short arc end cylinder destination county, i.e. short arc section l1With Gaussian segment l2Intersection, i.e.,
At the 65.01mm of short arc end.
Tool heads design：From No. 45 steel, as the osculum diameter of ultrasonic transformer.Design of length is 10mm.
3rd, software systems
Based on VC++6.0 and OpenGL Display Techniques, image is gathered by USB, realizes that the dynamic realtime of micro-image is pre-
Look at, still image is caught, and the segmentation of burr form distributed image, Contour extraction, geometric properties calculate and measurement analysis, three-dimensional are flat
The motion control of platform, the storage of data and report printing function.Fig. 8 show the software function diagram of system.
Primary operational flow is as follows：
Step 1, logon operation user, equipment self-inspection；
Step 2, a collection of magnetic core is positioned on operating platform, clicks on " logical magnetic ", magnetic core is fixed；
Step 3, CCD is being moved to most above edge magnetic core by control system, by making the scanning of " bow " font, in zoom
In the presence of microscopic system, the image of collection analyzed by the measurement of software, obtains the centre of form of burr height and magnetic core
Positional information, and record the burr and position of form center of each magnetic core；
Step 4, the processing head to ultrasonic vibration system, kinetic control system automatically move to processing head according to position of form center
On the position of form center of magnetic core, the parameter of ultrasonic vibration system is adjusted, processing is removed to burr；
Step 5, completion of processing, demagnetization.Magnetic core is removed.
After step 6, end of operation, lower electricity, software is closed.
Claims (7)
1. magnetic ferrite magnetic core moves back the measurement of epilation thorn, minimizing technology, the device that this method uses includes frame, fixture, three-dimensional
Motion platform, zoom microscopic digital picture system and ultrasonic vibration system；
Three-dimensional movement platform is provided with frame, fixture is placed in three-dimensional movement platform, fixed below described fixture to set
It is equipped with coil；Described coil is used to fix soft magnetic ferrite after powered up；
Zoom microscopic digital picture system and ultrasonic vibration system are provided with above described fixture；
It is characterized in that：
Magnetic ferrite magnetic core is carried out moving back the measurement of epilation thorn by zoom microscopic digital picture system and core center position is determined
Position is calculated, and the height of epilation thorn is moved back according to measurement, sets ultrasonic vibration system parameter, starts ultrasonic vibration system, removes magnetic core
Move back epilation thorn, detailed process is as follows：
The epilation transfixation of moving back of magnetic ferrite magnetic core is crossed zoom microscopic digital picture system and is imaged on solid state image sensor, schemes
Picture sensor is connected by USB interface with computer, by image preprocessing, after rim detection, image-region division, is carried
Take height, girth, area and position distribution situation；Wherein, image preprocessing uses the micro-image denoising based on wavelet transformation
Algorithm, make the marginal information of image apparent, textural characteristics enhancing；Rim detection uses the morphological Edge Detection based on scan line
Algorithm；Split according to the image-region after rim detection, then the image after segmentation is marked, finally extraction mark
The profile of epilation thorn is retreated, selection moves back epilation thorn wheel exterior feature, girth, the centre of form, area and maximum height as its geometric properties；Will figure
As upper each magnetic core position of form center from the Coordinate Conversion on image be three-dimensional movement platform on reference point numerical value, surpassed
The tool heads relative motion position of acoustic vibration system, three-dimensional movement platform is driven, start ultrasonic vibration system, so as to complete to remove
Magnetic core moves back epilation thorn.
2. according to the method for claim 1, it is characterised in that：Object lens choosing in described zoom microscopic digital picture system
Use electronic eyepiece.
3. according to the method for claim 1, it is characterised in that：Described ultrasonic vibration system includes ultrasonic power, surpassed
Acoustic wave transducer, ultrasonic variable amplitude bar and tool heads；Ultrasonic power power frequency electric is converted into after ultrasonic exciting be loaded into it is super
On sonic transducer, electric excitation is converted into ultrasonic activation by ultrasonic transducer, and the ultrasonic activation after ultrasonic transformer amplifies passes
Cast in tool heads to carrying out soft magnetic ferrite processing.
4. according to the method for claim 3, it is characterised in that：Described ultrasonic power uses FZ-1000A type ultrasonic waves
Power supply.
5. according to the method for claim 3, it is characterised in that：Described ultrasonic transducer uses Langevin structure.
6. according to the method for claim 3, it is characterised in that：Described ultrasonic variable amplitude bar is selected and is made by No. 45 steel
Complex Gaussian ultrasonic transformer.
7. according to the method for claim 3, it is characterised in that：Described tool heads select No. 45 steel, and Design of length is
10mm。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510486099.5A CN105140015B (en) | 2015-08-09 | 2015-08-09 | Magnetic ferrite magnetic core moves back the measurement of epilation thorn, minimizing technology and device |
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| CN201510486099.5A CN105140015B (en) | 2015-08-09 | 2015-08-09 | Magnetic ferrite magnetic core moves back the measurement of epilation thorn, minimizing technology and device |
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| CN105140015B true CN105140015B (en) | 2017-11-21 |
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| CN108637226A (en) * | 2018-04-10 | 2018-10-12 | 东莞市新玛博创超声波科技有限公司 | A kind of burr mouth of a river minimizing technology of metal casting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201399718Y (en) * | 2009-04-20 | 2010-02-10 | 青岛理工大学 | Reciprocating ultrasonic vibration finishing device |
| CN102357777A (en) * | 2011-09-14 | 2012-02-22 | 中国航空工业第六一八研究所 | Processing method for tiny thin-wall part |
| CN102528573A (en) * | 2012-01-18 | 2012-07-04 | 浙江大学 | Ultrasonic deburring device for horizontal working-head magnetic core |
| CN103419310A (en) * | 2013-08-19 | 2013-12-04 | 亿和精密工业（苏州）有限公司 | Deburring machine |
| CN205028772U (en) * | 2015-08-09 | 2016-02-10 | 中国计量学院 | Soft magnetic ferrite magnetic core moves back epilation thorn and measures and remove device |
-
2015
- 2015-08-09 CN CN201510486099.5A patent/CN105140015B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201399718Y (en) * | 2009-04-20 | 2010-02-10 | 青岛理工大学 | Reciprocating ultrasonic vibration finishing device |
| CN102357777A (en) * | 2011-09-14 | 2012-02-22 | 中国航空工业第六一八研究所 | Processing method for tiny thin-wall part |
| CN102528573A (en) * | 2012-01-18 | 2012-07-04 | 浙江大学 | Ultrasonic deburring device for horizontal working-head magnetic core |
| CN103419310A (en) * | 2013-08-19 | 2013-12-04 | 亿和精密工业（苏州）有限公司 | Deburring machine |
| CN205028772U (en) * | 2015-08-09 | 2016-02-10 | 中国计量学院 | Soft magnetic ferrite magnetic core moves back epilation thorn and measures and remove device |
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